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Ergogenic aids

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https://www.readbyqxmd.com/read/28165424/changbai-mountain-ginseng-panax-ginseng-c-a-mey-extract-supplementation-improves-exercise-performance-and-energy-utilization-and-decreases-fatigue-associated-parameters-in-mice
#1
Guo-Dong Ma, Chun-Hui Chiu, Yi-Ju Hsu, Chien-Wen Hou, Yi-Ming Chen, Chi-Chang Huang
Changbai Mountain Ginseng (CMG, Panax ginseng C.A. Mey) is a traditional medicine commonly found in Northeast China and grows at elevations of 2000 m or higher in the Changbai Mountain Range. CMG, considered to be a "buried treasure medicine", is priced higher than other types of ginseng. However, few studies have demonstrated the effects of CMG supplementation on exercise performance, physical fatigue, and the biochemical profile. The major compound of CMG extract was characterized by electrospray ionization tandem mass spectrometry (HPLC-ESI-MS/MS)...
February 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28150477/red-ginseng-as-an-ergogenic-aid-a-systematic-review-of-clinical-trials
#2
REVIEW
Nan Hee Lee, Hyun Chul Jung, Sukho Lee
Purpose: This systematic review was performed to summarize clinical trials assessing the effect of Red Ginseng (RG) supplementation on exercise performance and fatigue recovery. Methods: Two English databases (PUBMED, MEDLINE) and two Korean databases (KISS, RISS) were used as systematic searching engines. We included only articles written in the English and Korean languages. Clinical trials, which evaluated exercise performance and recovery variables with RG supplementation, were included in this review...
31, 2016: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28134840/a2-milk-enhances-dynamic-muscle-function-following-repeated-sprint-exercise-a-possible-ergogenic-aid-for-a1-protein-intolerant-athletes
#3
Ben Kirk, Jade Mitchell, Matthew Jackson, Farzad Amirabdollahian, Omid Alizadehkhaiyat, Tom Clifford
Hyperaminoacidemia following ingestion of cows-milk may stimulate muscle anabolism and attenuate exercise-induced muscle damage (EIMD). However, as dairy-intolerant athletes do not obtain the reported benefits from milk-based products, A2 milk may offer a suitable alternative as it lacks the A1-protein. This study aimed to determine the effect of A2 milk on recovery from a sports-specific muscle damage model. Twenty-one male team sport players were allocated to three independent groups: A2 milk (n = 7), regular milk (n = 7), and placebo (PLA) (n = 7)...
January 28, 2017: Nutrients
https://www.readbyqxmd.com/read/28095077/running-performance-with-nutritive-and-non-nutritive-sweetened-mouth-rinses
#4
Keely H Hawkins, Sridevi Krishnan, Lara Ringos, Vanessa Garcia, Jamie A Cooper
: Mouth rinsing (MR) with carbohydrate during exercise has been shown to act as an ergogenic aid. PURPOSE: To investigate if nutritive or nonnutritive sweetened MR affect exercise performance, and to assess the influence of sweetness intensity on endurance performance during a time-trial (TT). METHODS: This randomized, single blinded study had 4 treatment conditions. 16 subjects (9 men, 7 women) completed a 12.8km TT four different times. During each TT, subjects MR and expectorated a different solution at time 0 and every 12...
January 17, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28050921/influence-of-dietary-acid-load-on-exercise-performance
#5
Catherine Applegate, Mackenzie Mueller, Krystle E Zuniga
Diet composition can affect systemic pH and acid-base regulation, which may in turn influence exercise performance. An acidic environment in the muscle impairs performance and contributes to fatigue; therefore, current trends in sports nutrition place importance on maximizing the alkalinity of the body with ergogenic aids and dietary strategies. This review examines the evidence on the effects of dietary manipulations on acid load and exercise performance. Ten studies that investigated the effect of high versus low dietary acid loads on athletic performance generally identified that low dietary acid loads increased plasma pH, but did not consistently improve exercise performance at maximal or submaximal exercise intensities...
January 4, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/27934546/sodium-bicarbonate-ingestion-and-individual-variability-in-time-to-peak-ph
#6
Andy Sparks, Emily Williams, Amy Robinson, Peter Miller, David J Bentley, Craig Bridge, Lars R Mc Naughton
This study determined variability in time-to-peak pH after consumption of 300 mg kg(-)(1) of sodium bicarbonate. Seventeen participants (mean ± SD: age 21.38 ± 1.5 years; mass 75.8 ± 5.8 kg; height 176.8 ± 7.6 cm) reported to the laboratory where a resting capillary sample was taken. Then, 300 mg kg(-1) of NaHCO3 in 450 ml of flavoured water was ingested. Participants rested for 90 min and repeated blood samples were procured at 10 min intervals for 60 min and then every 5 min until 90 min...
January 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/27930449/quantifying-the-effect-of-carbohydrate-mouth-rinsing-on-exercise-performance
#7
Daniel J Peart
The purpose of this study was to review the existing literature investigating carbohydrate mouth rinsing (CMR) as an ergogenic aid by using the effect sizes and percentage change in performance of the respective studies as outcome measures. A trivial-small average overall effect size was present for the 25 studies included in the review (0.18, 95% CI = 0.10 to 0.27). Effect sizes for the sub-groups were; ≥25-min (0.25, 95% CI = 0.14 to 0.36), ≤ 180 seconds (0.06, 95% CI = -0.03 to 0.15), resistance exercise (-0...
November 19, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27930383/effect-of-e-oj-01-on-cardiac-conditioning-in-young-exercising-adults-a-randomized-controlled-trial
#8
Robert N Girandola, Shalini Srivastava
BACKGROUND AND AIM: Cardiac health is a determinant of athletic performance. A body of data suggests that in healthy young adults, an increase in maximal cardiac output leads to an increase in endurance. Terminalia arjuna (TA) has been studied for multiple benefits in cardiovascular health although its effects as a cardioprotective ergogenic aid require further exploration. The current trial was planned to study the effect of the proprietary TA extract (E-OJ-01) on the markers of cardiac conditioning in healthy young adults...
November 29, 2016: American Journal of Therapeutics
https://www.readbyqxmd.com/read/27858306/menthol-a-fresh-ergogenic-aid-for-athletic-performance
#9
Christopher J Stevens, Russ Best
The application of menthol has recently been researched as a performance-enhancing aid for various aspects of athletic performance including endurance, speed, strength and joint range of motion. A range of application methods has been used including a mouth rinse, ingestion of a beverage containing menthol or external application to the skin or clothing via a gel or spray. The majority of research has focussed on the use of menthol to impart a cooling sensation on athletes performing endurance exercise in the heat...
November 17, 2016: Sports Medicine
https://www.readbyqxmd.com/read/27757591/acute-effects-of-caffeine-containing-energy-drinks-on-physical-performance-a-systematic-review-and-meta-analysis
#10
REVIEW
Diego B Souza, Juan Del Coso, Juliano Casonatto, Marcos D Polito
PURPOSE: Caffeine-containing energy drinks (EDs) are currently used as ergogenic aids to improve physical performance in a wide variety of sport disciplines. However, the outcomes of previous investigations on this topic are inconclusive due to methodological differences, especially, in the dosage of the active ingredients and the test used to assess performance. METHODS: We performed a systematic review and meta-analysis of published studies to evaluate the effects of acute ED intake on physical performance...
October 18, 2016: European Journal of Nutrition
https://www.readbyqxmd.com/read/27757381/echinacea-supplementation-does-it-really-improve-aerobic-fitness
#11
Cory W Baumann, Dongmin Kwak
PURPOSE: Echinacea is an herbal supplement used by endurance athletes for its performance boosting properties. It is thought that Echinacea improves the blood's oxygen carrying capacity by increasing production of erythropoietin (EPO), a glycoprotein that regulates red blood cell formation. Subsequently, these changes would lead to an overall improvement in maximal oxygen uptake (VO2max) and running economy (RE), two markers of aerobic fitness. The purpose of this review is to briefly discuss the physiological variables associated with distance running performance and how these variables are influenced by Echinacea supplementation...
September 2016: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/27691998/characterisation-of-equine-satellite-cell-transcriptomic-profile-response-to-%C3%AE-hydroxy-%C3%AE-methylbutyrate-hmb
#12
Katarzyna A Szcześniak, Anna Ciecierska, Piotr Ostaszewski, Tomasz Sadkowski
β-Hydroxy-β-methylbutyrate (HMB) is a popular ergogenic aid used by human athletes and as a supplement to sport horses, because of its ability to aid muscle recovery, improve performance and body composition. Recent findings suggest that HMB may stimulate satellite cells and affect expressions of genes regulating skeletal muscle cell growth. Despite the scientific data showing benefits of HMB supplementation in horses, no previous study has explained the mechanism of action of HMB in this species. The aim of this study was to reveal the molecular background of HMB action on equine skeletal muscle by investigating the transcriptomic profile changes induced by HMB in equine satellite cells in vitro...
October 2016: British Journal of Nutrition
https://www.readbyqxmd.com/read/27678471/thirty-years-of-investigation-on-the-ergogenic-effects-of-sodium-citrate-is-it-time-for-a-fresh-start
#13
Vitor de Salles Painelli, Antonio Herbert Lancha Junior
Sodium citrate (SCit) supplementation has been studied for several years as a strategy to reduce the muscle fatigue induced by H(+) ion accumulation within the skeletal muscle during high-intensity, short-duration exercise. Several investigations have been published on this matter, and appear to indicate that SCit is not effective as an ergogenic aid, despite its ability to increase extracellular buffering capacity. In this short report, we briefly discuss the SCit results previously published in the literature and consider them in light of new and promising findings, which appear to address issues associated with previous study designs...
September 27, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27669443/spinal-cord-injury-level-influences-acute-plasma-caffeine-responses
#14
Terri Susan Graham-Paulson, Thomas Andrew William Paulson, Claudio Perret, Keith Tolfrey, Philip Cordery, Victoria Louise Goosey-Tolfrey
PURPOSE: To investigate the absorption curve and acute effects of caffeine at rest in individuals with no spinal cord injury (SCI), paraplegia (PARA) and tetraplegia (TETRA). METHODS: Twenty-four healthy males (8 able-bodied (AB), 8 PARA and 8 TETRA) consumed 3 mg[BULLET OPERATOR]kg caffeine anhydrous (CAF) in a fasted state. Plasma caffeine [CAF], glucose, lactate, free-fatty acid [FFA] and catecholamine concentrations were measured during a 150 min rest period...
September 23, 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27623757/acute-supplementation-of-l-arginine-neither-affects-strength-performance-nor-nitric-oxide-production
#15
Claudia M Meirelles, Cristiane Matsuura
BACKGROUND: L-arginine is a semi-essential amino acid involved in nitric oxide production. As nitric oxide is an important vasodilator, L-arginine supplementation would increase blood perfusion and, subsequently, muscle performance during exercises. The aim of this study was to determine the acute effect of L-arginine supplementation on strength performance and nitric oxide levels in healthy trained individuals. METHODS: In a doubleblind, placebo-controlled, cross-over study, 12 men were randomly assigned to L-arginine or placebo supplementation...
September 13, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27623161/increased-thermoregulatory-strain-when-wearing-an-upper-body-compression-garment-during-moderate-exercise-in-trained-older-adults
#16
Iker Leoz-Abaurrea, Mikel Izquierdo, Miriam Gonzalez-Izal, Roberto Aguado-Jiménez
The efficacy of the use of an upper body compression garment (UBCG) as an ergogenic aid to reduce thermoregulatory strain in older adults remains unknown. The aim of this study was to evaluate the effects of UBCG on thermoregulatory, cardiorespiratory and perceptual responses during cycling in a temperate environment (~25ºC, 66% rh) in trained older adults. Twelve cyclists aged 66±2 years performed an intermittent 1-h cycling trial at 50% of the peak power output followed by 10 min of passive recovery. Participants were provided with either commercially available UBCG or control garment in a randomized order...
September 6, 2016: Journal of Aging and Physical Activity
https://www.readbyqxmd.com/read/27584317/placebo-and-nocebo-effects-of-a-purported-ergogenic-aid-on-repeat-sprint-performance-1278-board-8-june-2-8-00-am-10-00-am
#17
Chris J Beedie, Philip Hurst, Damian Coleman, Abby Foad
No abstract text is available yet for this article.
May 2016: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27546324/prevalence-of-the-use-of-effective-ergogenic-aids-among-professional-athletes
#18
Barbara Frączek, Maja Warzecha, Florentyna Tyrała, Aleksandra Pięta
BACKGROUND: Athletic performance can be substantially enhanced with supplements and functional food which are considered by scientists as efficient, safe and legal, such as protein, carbohydrate and protein-carbohydrate supplements, isotonic sports drinks, carbohydrate-protein bars, carbohydrate bars, creatine and caffeine. OBJECTIVE: The study is aimed at an analysis and evaluation of the prevalence of using effective ergogenic aids (creatine, caffeine, isotonic drinks, carbohydrates, and proteins) in a group of Polish professional athletes...
2016: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/27465721/nutrition-supplements-to-stimulate-lipolysis-a-review-in-relation-to-endurance-exercise-capacity
#19
Jisu Kim, Jonghoon Park, Kiwon Lim
Athletes make great efforts to increase their endurance capacity in many ways. Using nutrition supplements for stimulating lipolysis is one such strategy to improve endurance performance. These supplements contain certain ingredients that affect fat metabolism; furthermore, in combination with endurance training, they tend to have additive effects. A large body of scientific evidence shows that nutrition supplements increase fat metabolism; however, the usefulness of lipolytic supplements as ergogenic functional foods remains controversial...
2016: Journal of Nutritional Science and Vitaminology
https://www.readbyqxmd.com/read/27414159/sildenafil-does-not-improve-exercise-capacity-under-acute-hypoxia-exposure
#20
A H Toro-Salinas, N Fort, J R Torrella, T Pagès, C Javierre, G Viscor
The increase in pulmonary arterial pressure (PAP) due to hypoxic pulmonary vasoconstriction (HPV) could be a limiting factor for physical performance during hypoxic exposure. Sildenafil has been shown to reduce PAP in situations of moderate or severe hypoxia, and consequently its role as an ergogenic aid and even a possible doping substance must be considered. We performed a double-blind crossover study to determine the effects of sildenafil on cardiovascular, respiratory and metabolic parameters in normoxia and during acute exposure to hypobaric hypoxia (4 000 m) at rest and during maximal and submaximal (60% VO2 max) exercise tests...
September 2016: International Journal of Sports Medicine
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